Sjöström Audio DIY forum

Lm317 has 24.5V at input and Lm337 has only 17.9V..

The AC voltage should be a few uV but this must be measured with special equipment. Check first the incoming voltage. It should be at least 4 volt more than the output voltage, in your case 19 volts. Measure at the input of the LM317/337.

Got transformers and hooked it up to SSR03 (AD825, LM431, +-15V BOM). Final result +15.19V / -15.09V. If i would like to trim it down a bit, to 15V exactly, what needs to be done?

I measure 10-11mV of AC on outputs on cold, and 9mV on stable working unit. It is normal in my case?

Thanks in advance.

If you check the documentation you can find the 6 V version, both BOM and schematics.

Am sure (and sorry if) this question has been dealt with before. I would like to change the output voltage of the SSR01 from 12V to 6V. I would just want to validate which resistor(s) needs to be changed and what kind of values would work. Thanks for this.

No...

Do 330 ohms impact anything else besides the gain?

Hi,

Thanks for the tip.

I did not think that the AGND have no mass !!!

Are the sense inputs connected? Have you tin drops on J1-4?

Hi,

SSR03 board with OP, the rest soldered itself.
Plus volts 13.4V, minus volts 10.4V.
OP From PIN6 + V -6.5V
OP from -V + 3.5V.

All components checked twice.
Maybe components defective?

Please help!! :-(